UnixHTTPURLInputStream.cpp
上传用户:huihehuasu
上传日期:2007-01-10
资源大小:6948k
文件大小:10k
源码类别:
xml/soap/webservice
开发平台:
C/C++
- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2001 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation, and was
- * originally based on software copyright (c) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /*
- * $Log: UnixHTTPURLInputStream.cpp,v $
- * Revision 1.7 2001/09/04 17:53:09 peiyongz
- * Bugzilla# 3170: patch from Kevin Philips to handle Query in XMLURL.
- *
- * Revision 1.6 2001/06/25 16:27:04 tng
- * AS400 changes by Linda Swan.
- *
- * Revision 1.5 2000/07/21 03:31:41 andyh
- * Improved (but still weak) http access by the parser.
- *
- * Revision 1.4 2000/05/15 22:31:28 andyh
- * Replace #include<memory.h> with <string.h> everywhere.
- *
- * Revision 1.3 2000/03/24 01:30:32 rahulj
- * Connect to the port specified in the URL, rather than the default
- * one.
- *
- * Revision 1.2 2000/03/22 00:58:11 rahulj
- * Now we throw exceptions when errors occur.
- * Simplified code based on assumption that calling
- * function will allocate enough storage to store the
- * incoming data.
- *
- * Revision 1.1 2000/03/20 23:48:51 rahulj
- * Added Socket based NetAccessor. This will enable one to
- * use HTTP URL's for system id's. Default build options do
- * not use this NetAccessor. Specify the '-n socket' option
- * to 'runConfigure' to configure Xerces-C to use this new
- * feature. The code works under Solaris 2.6, Linux, AIX
- * and HPUX 11 with aCC.
- * Todo's: enable proper error handling.
- *
- */
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <iostream.h>
- #include <unistd.h>
- #include <sys/types.h>
- #include <sys/socket.h>
- #include <netinet/in.h>
- #include <arpa/inet.h>
- #include <netdb.h>
- #include <errno.h>
- #include <util/XMLNetAccessor.hpp>
- #include <util/NetAccessors/Socket/UnixHTTPURLInputStream.hpp>
- #include <util/XMLString.hpp>
- #include <util/XMLExceptMsgs.hpp>
- #include <util/Janitor.hpp>
- #include <util/XMLUniDefs.hpp>
- UnixHTTPURLInputStream::UnixHTTPURLInputStream(const XMLURL& urlSource)
- : fSocket(0)
- , fBytesProcessed(0)
- {
- //
- // Pull all of the parts of the URL out of th urlSource object, and transcode them
- // and transcode them back to ASCII.
- //
- const XMLCh* hostName = urlSource.getHost();
- char* hostNameAsCharStar = XMLString::transcode(hostName);
- ArrayJanitor<char> janBuf1(hostNameAsCharStar);
- const XMLCh* path = urlSource.getPath();
- char* pathAsCharStar = XMLString::transcode(path);
- ArrayJanitor<char> janBuf2(pathAsCharStar);
- const XMLCh* fragment = urlSource.getFragment();
- char* fragmentAsCharStar = 0;
- if (fragment)
- fragmentAsCharStar = XMLString::transcode(fragment);
- ArrayJanitor<char> janBuf3(fragmentAsCharStar);
- const XMLCh* query = urlSource.getQuery();
- char* queryAsCharStar = 0;
- if (query)
- queryAsCharStar = XMLString::transcode(query);
- ArrayJanitor<char> janBuf4(queryAsCharStar);
- unsigned short portNumber = (unsigned short) urlSource.getPortNum();
- //
- // Set up a socket.
- //
- struct hostent* hostEntPtr = 0;
- struct sockaddr_in sa;
- if ((hostEntPtr = gethostbyname(hostNameAsCharStar)) == NULL)
- {
- unsigned long numAddress = inet_addr(hostNameAsCharStar);
- if (numAddress < 0)
- {
- ThrowXML(NetAccessorException,
- XMLExcepts::NetAcc_TargetResolution);
- }
- if ((hostEntPtr =
- gethostbyaddr((char *) &numAddress,
- sizeof(unsigned long), AF_INET)) == NULL)
- {
- ThrowXML(NetAccessorException,
- XMLExcepts::NetAcc_TargetResolution);
- }
- }
- memcpy((void *) &sa.sin_addr,
- (const void *) hostEntPtr->h_addr, hostEntPtr->h_length);
- sa.sin_family = hostEntPtr->h_addrtype;
- sa.sin_port = htons(portNumber);
- int s = socket(hostEntPtr->h_addrtype, SOCK_STREAM, 0);
- if (s < 0)
- {
- ThrowXML(NetAccessorException,
- XMLExcepts::NetAcc_CreateSocket);
- }
- if (connect(s, (struct sockaddr *) &sa, sizeof(sa)) < 0)
- {
- ThrowXML(NetAccessorException,
- XMLExcepts::NetAcc_ConnSocket);
- }
- // The port is open and ready to go.
- // Build up the http GET command to send to the server.
- // To do: We should really support http 1.1. This implementation
- // is weak.
- strcpy(fBuffer, "GET ");
- strcat(fBuffer, pathAsCharStar);
- if (queryAsCharStar != 0)
- {
- fBuffer[strlen(fBuffer)] = chQuestion;
- strcat(fBuffer, queryAsCharStar);
- }
- if (fragmentAsCharStar != 0)
- {
- strcat(fBuffer, fragmentAsCharStar);
- }
- strcat(fBuffer, " HTTP/1.0rn");
- strcat(fBuffer, "Host: ");
- strcat(fBuffer, hostNameAsCharStar);
- if (portNumber != 80)
- {
- int i = strlen(fBuffer);
- sprintf(fBuffer+i, "%d", portNumber);
- // _itoa(portNumber, fBuffer+i, 10);
- }
- strcat(fBuffer, "rnrn");
- // Send the http request
- int lent = strlen(fBuffer);
- int aLent = 0;
- if ((aLent = write(s, (void *) fBuffer, lent)) != lent)
- {
- ThrowXML(NetAccessorException,
- XMLExcepts::NetAcc_WriteSocket);
- }
- //
- // get the response, check the http header for errors from the server.
- //
- aLent = read(s, (void *)fBuffer, sizeof(fBuffer)-1);
- if (aLent <= 0)
- {
- ThrowXML(NetAccessorException, XMLExcepts::NetAcc_ReadSocket);
- }
- fBufferEnd = fBuffer+aLent;
- *fBufferEnd = 0;
- // Find the break between the returned http header and any data.
- // (Delimited by a blank line)
- // Hang on to any data for use by the first read from this BinHTTPURLInputStream.
- //
- fBufferPos = strstr(fBuffer, "rnrn");
- if (fBufferPos != 0)
- {
- fBufferPos += 4;
- *(fBufferPos-2) = 0;
- }
- else
- {
- fBufferPos = strstr(fBuffer, "nn");
- if (fBufferPos != 0)
- {
- fBufferPos += 2;
- *(fBufferPos-1) = 0;
- }
- else
- fBufferPos = fBufferEnd;
- }
- // Make sure the header includes an HTTP 200 OK response.
- //
- char *p = strstr(fBuffer, "HTTP");
- if (p == 0)
- {
- ThrowXML(NetAccessorException, XMLExcepts::NetAcc_ReadSocket);
- }
- p = strchr(p, ' ');
- if (p == 0)
- {
- ThrowXML(NetAccessorException, XMLExcepts::NetAcc_ReadSocket);
- }
- int httpResponse = atoi(p);
- if (httpResponse != 200)
- {
- // Most likely a 404 Not Found error.
- // Should recognize and handle the forwarding responses.
- //
- ThrowXML(NetAccessorException, XMLExcepts::File_CouldNotOpenFile);
- }
- fSocket = s;
- }
- UnixHTTPURLInputStream::~UnixHTTPURLInputStream()
- {
- shutdown(fSocket, 2);
- close(fSocket);
- }
- unsigned int UnixHTTPURLInputStream::readBytes(XMLByte* const toFill
- , const unsigned int maxToRead)
- {
- unsigned int len = fBufferEnd - fBufferPos;
- if (len > 0)
- {
- // If there's any data left over in the buffer into which we first
- // read from the server (to get the http header), return that.
- if (len > maxToRead)
- len = maxToRead;
- memcpy(toFill, fBufferPos, len);
- fBufferPos += len;
- }
- else
- {
- // There was no data in the local buffer.
- // Read some from the socket, straight into our caller's buffer.
- //
- len = read(fSocket, (void *) toFill, maxToRead);
- if (len == -1)
- {
- ThrowXML(NetAccessorException, XMLExcepts::NetAcc_ReadSocket);
- }
- }
- fBytesProcessed += len;
- return len;
- }